Press Release

Release Date: December 22, 2009

DENVER, Colorado -- In September 2009 the Water Research Foundation (WaterRF) approved a Tailored Collaboration Research Project studying the impact of MIEX^® Treatment on the reduction and control of DBPs, turbidity, residuals and corrosion (Project #4298).

The study is being co-funded by Rivanna Water and Sewer Authority (Charlottesville, VA) and directed by Richard Brown of Environmental Engineering & Technology (Newport News, VA). The purpose of the project is to investigate the potential downstream benefits as a consequence of MIEX^® Treatment prior to coagulation processes.

The study is being conducted at two water treatment plants using a 10 gpm MIEX^® Pilot plant prior to a coagulation and filtration pilot to determine the downstream benefits. Potential reductions in coagulant dose are being investigated, as well as potential impacts on clarifier and filter operations (e.g., filter run time, quantity of residuals production, and dewatering characteristics of clarifier residuals).

Simulated distribution disinfection studies on pilot plant effluents will determine process performance for regulatory DBP compliance. Samples for organic matter characterization
after each of the treatment processes will determine the fraction of organic matter and subsequent DBP precursors being removed by each treatment step.

The impact of MIEX^® Resin regeneration with sodium bicarbonate instead of sodium chloride will also be evaluated to improve disposal opportunities for regeneration residuals. The results of the study will be published in a WaterRF report by Spring 2011.

About Orica Watercare Inc.
Orica Watercare Inc. is the manufacturer of MIEX^® Systems and MIEX^® Ion Exchange Resins for the reduction of Disinfection By-Products, Dissolved Organic Carbon, Color, Nitrate and Arsenic from water & wastewater streams. Orica Watercare Inc., headquartered in Denver, CO is a subsidiary of the Orica group of companies. The Orica group is the largest supplier of water treatment and industrial chemicals in Australia and New Zealand and is the world's largest supplier of commercial explosives.

Visit http://www.miexresin.com for more information.